The people who are most interested in babies tend to be the people who have babies. From personal experience, once your babies have grown up a bit then the “magic” of dribble, teething and puréed food ceases to be quite so magical. So the challenge for Babies: Their Wonderful World (BBC Two), whose second episode went out last night, is to find an audience beyond cooing new parents.

Its ploy, as with so much factual TV at the moment, is to mine psychology and sociology papers for toothsome nuggets. Through a series of experiments it connects baby behaviour with adult behaviour, suggesting that if you’re not that interested, you jolly well should be.